Include job_options in GET /jobs/{job_id} response

[Copilot]

Job options submitted via POST /jobs were stored but never surfaced back to the user on GET /jobs/{job_id}.

Changes

• BatchJobMetadata.to_api_dict() — when full=True, spreads job_options dict entries as top-level properties in the response, per the openEO API convention for custom backend properties
• tests/test_views.py — adds test_get_job_info_with_job_options covering the end-to-end round-trip

Example

A job created with:

{ "process": {...}, "driver-memory": "3g", "executor-memory": "5g" }

Now returns those options in GET /jobs/{job_id}:

{
  "id": "job-123",
  "status": "created",
  "process": {...},
  "driver-memory": "3g",
  "executor-memory": "5g"
}